Toothbrush



FIG. 1 is a perspective front view of a toothbrush showing our new design;

FIG. 2 is a head end view thereof;

FIG. 3 is a handle end view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a top view thereof.

The broken line showing of the two generally-oval shaped regions on the handle including the unshaded areas therein, and the enclosed region and features on the back of the toothbrush head, is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a toothbrush, as shown and described. 